M27_2012-08-10

Nebulae - M27

R.A.: 19h 59m 36.34s
Dec.: +22° 43' 16.09"
Mag.: 7.5

The Dumbbell Nebula (also known as Messier 27, M 27, or NGC 6853) is a planetary nebula (PN)
in the constellation Vulpecula, at a distance of about 1,360 light years. This object was
the first planetary nebula to be discovered; by Charles Messier in 1764. At its brightness
of visual magnitude 7.5 and its diameter of about 8 arcminutes, it is easily visible in binoculars,
and a popular observing target in amateur telescopes.

M 27 - The Dumbell Nebula

Date/time:
26.07.2012 and 10.08.2012
Ambient conditions: 15°C, transparency 4/5, seeing 4/5
Location: Trier, Germany

Equipment:
Telescope: Deltagraph 300mm f/3.3
Mount: GM2000QCI
Camera: SXVF-M25C
Guiding scope: Orion short tube 80mm f/5
Guiding camera: ATIK 16IC
Filters: IDAS LPS

Acquisition:
Software: Maxim DL 5
FOV, Image scale: 62.5 x 54.8 arcmin, 1.62 arcs/pixel
Sub-exposures: 3h 20min (20 x 10min) light frames
No darks, 50x15s ELflats, bias

Processing:
Maxim DL: Calibration, registration, SDMask stacking
Images Plus 3.75: DDP
CS5: Levels, Match Color

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